NVCC BIO 101 Exam Verified Biology Exam Questions and
Answers | Comprehensive A+ Study Resource Currently Testing |
Northern Virginia Community College
What are the 3 characteristics of DNA?- CORRECT ANSWER ✔✔ 1. Must be able to code for the sequence of
amino acids in proteins and control protein synthesis
2. Must be able to replicate itself prior to cell division
3. Must be able to change over time to account for evolutionary change (evolution)
Is this statement correct? Two kinds of molecules participate in protein synthesis: deoxyribonucleic acid (DNA)
and ribonucleic acid (RNA).- CORRECT ANSWER ✔✔ True
Is this statement correct? The purines, cytosine, thymine, and uracil, have a single-ring structure.- CORRECT
ANSWER ✔✔ False: They are not Purines
Is this statement correct? Deoxyribonucleic (DNA) acid has one less hydroxyl group than ribonucleic acid
(RNA)- CORRECT ANSWER ✔✔ True
Is this statement correct? Each strand of DNA is oriented such that the 3' carbons of deoxyribose in one strand
are oriented in the opposite directions from the 3' carbons in the other strand, thus, the two strands of DNA have
opposite orientations and the DNA molecule is said to be antiparallel.- CORRECT ANSWER ✔✔ True
Is this statement correct? In a DNA molecule, adenine always bonds to thymine, and cytosine always bonds
with guanine- CORRECT ANSWER ✔✔ True
Is this statement correct? Thymine is not present in a DNA molecule.- CORRECT ANSWER ✔✔ False: It's
present ONLY in DNA
Is this statement correct? There is a triple bond between cytosine and guanine and a double bond between
adenine and thymine. Both bonds are hydrogen bonds and, coupled with hydrophobic forces, help the DNA
molecule remain together.- CORRECT ANSWER ✔✔ True
, Replication of DNA requires the existing double helix to separate into two template strands. This separation is
accomplished by:- CORRECT ANSWER ✔✔ Helicase
Where (what site) does DNA separation happen?- CORRECT ANSWER ✔✔ Replication Fork (Origin) of the
Replication Site
After the DNA strands have been separated ___ stabilizes the individual strands so that replication can
continue.- CORRECT ANSWER ✔✔ Topoisomerase
___ assembles an RNA primer at the origin of the replication site.- CORRECT ANSWER ✔✔ Primase
Is this statement correct? DNA polymerase adds new nucleotides to RNA primer. The DNA nucleotides are
collected from the cell's cytoplasm.- CORRECT ANSWER ✔✔ True
The RNA primer is removed and replaced with an appropriate sequence of DNA nucleotides. Which enzymes
help to directly facilitate this process?- CORRECT ANSWER ✔✔ Nucleotide Replacement Enzymes
Regarding DNA replication: One strand is replicated continuously toward the unwinding site and the other
strand is replicated discontinuously in the other direction with the formation of a series of short segments called
Okazaki fragments. Which strand contains the Okazaki fragments?- CORRECT ANSWER ✔✔ The Lagging
Strand
Which enzymes are responsible for strengthening the bonds present in the "the backbone" of the DNA
molecule?- CORRECT ANSWER ✔✔ Ligase
Is this statement correct? When DNA polymerase enters the process of replication, it moves from 5' to 3'
(continuously) on the leading strand.- CORRECT ANSWER ✔✔ True
A ___ can be defined as a sequence of bases in DNA that codes for the synthesis of one polypeptide.-
CORRECT ANSWER ✔✔ Codon
Is this statement correct? The entire DNA molecule is twisted into a right-handed helix with one complete spiral
every 10 base pairs.- CORRECT ANSWER ✔✔ True
Answers | Comprehensive A+ Study Resource Currently Testing |
Northern Virginia Community College
What are the 3 characteristics of DNA?- CORRECT ANSWER ✔✔ 1. Must be able to code for the sequence of
amino acids in proteins and control protein synthesis
2. Must be able to replicate itself prior to cell division
3. Must be able to change over time to account for evolutionary change (evolution)
Is this statement correct? Two kinds of molecules participate in protein synthesis: deoxyribonucleic acid (DNA)
and ribonucleic acid (RNA).- CORRECT ANSWER ✔✔ True
Is this statement correct? The purines, cytosine, thymine, and uracil, have a single-ring structure.- CORRECT
ANSWER ✔✔ False: They are not Purines
Is this statement correct? Deoxyribonucleic (DNA) acid has one less hydroxyl group than ribonucleic acid
(RNA)- CORRECT ANSWER ✔✔ True
Is this statement correct? Each strand of DNA is oriented such that the 3' carbons of deoxyribose in one strand
are oriented in the opposite directions from the 3' carbons in the other strand, thus, the two strands of DNA have
opposite orientations and the DNA molecule is said to be antiparallel.- CORRECT ANSWER ✔✔ True
Is this statement correct? In a DNA molecule, adenine always bonds to thymine, and cytosine always bonds
with guanine- CORRECT ANSWER ✔✔ True
Is this statement correct? Thymine is not present in a DNA molecule.- CORRECT ANSWER ✔✔ False: It's
present ONLY in DNA
Is this statement correct? There is a triple bond between cytosine and guanine and a double bond between
adenine and thymine. Both bonds are hydrogen bonds and, coupled with hydrophobic forces, help the DNA
molecule remain together.- CORRECT ANSWER ✔✔ True
, Replication of DNA requires the existing double helix to separate into two template strands. This separation is
accomplished by:- CORRECT ANSWER ✔✔ Helicase
Where (what site) does DNA separation happen?- CORRECT ANSWER ✔✔ Replication Fork (Origin) of the
Replication Site
After the DNA strands have been separated ___ stabilizes the individual strands so that replication can
continue.- CORRECT ANSWER ✔✔ Topoisomerase
___ assembles an RNA primer at the origin of the replication site.- CORRECT ANSWER ✔✔ Primase
Is this statement correct? DNA polymerase adds new nucleotides to RNA primer. The DNA nucleotides are
collected from the cell's cytoplasm.- CORRECT ANSWER ✔✔ True
The RNA primer is removed and replaced with an appropriate sequence of DNA nucleotides. Which enzymes
help to directly facilitate this process?- CORRECT ANSWER ✔✔ Nucleotide Replacement Enzymes
Regarding DNA replication: One strand is replicated continuously toward the unwinding site and the other
strand is replicated discontinuously in the other direction with the formation of a series of short segments called
Okazaki fragments. Which strand contains the Okazaki fragments?- CORRECT ANSWER ✔✔ The Lagging
Strand
Which enzymes are responsible for strengthening the bonds present in the "the backbone" of the DNA
molecule?- CORRECT ANSWER ✔✔ Ligase
Is this statement correct? When DNA polymerase enters the process of replication, it moves from 5' to 3'
(continuously) on the leading strand.- CORRECT ANSWER ✔✔ True
A ___ can be defined as a sequence of bases in DNA that codes for the synthesis of one polypeptide.-
CORRECT ANSWER ✔✔ Codon
Is this statement correct? The entire DNA molecule is twisted into a right-handed helix with one complete spiral
every 10 base pairs.- CORRECT ANSWER ✔✔ True
